VDB crash in IPR (GPU)

[BBB3]

I'm getting the exception below every time I try to render a scene with a vdb with the IPR on V-Ray 5 GPU.
Tried with various VDBs. And also only with the VDB, to make sure that's the problem.
Scene sent to support via GDrive.
Using the 24 June nightly of V-Ray 5 stable

[a7az0th]

Got the scene. Will check what's going on

Listed as VGPU-4921

[BBB3]

It's happening with new PhoenixFD scenes too. Strangely enough, old scenes that have VDBs in them work fine. But adding a new volume grid triggers the error.

[goyko]

I could not reproduce a crash on my side. My log does show the export problems, though, so I guess they are not the sole cause of your crash.
I render the surface as SMOKE, as-is from the MAX scene.
Do I need to tweak some settings of the VDB object?
Can you specify driver version, graphics card etc.?

[BBB3]

No tweak needed. New VDBs and Phoenix grids never render here. Same crash every single time whatever the settings. Only old scenes work.
Working with the Jun 24 nightly of V-Ray 5 stable, on Max 2020, with 2xRTX 2080ti, on driver 442.92. Getting the same crash whether I use RTX or Cuda.

[goyko]

Please try driver 442.50 as I did the tests with it and no crashes. My Config is similar, but only one 2080Ti

[BBB3]

Will do. Is this the driver you usually recommend?

[goyko]

Well, when I selected the FumeFX render preset, that's when crashes begin in the same manner as you describe. Now we have some starting point.

[BBB3]

It seems to be something to do with the volumetric render settings.

[a7az0th]

Could it be related to a 3rd party plugin that is incompatible with V-Ray 5?

[BBB3]

I only have a few plugins and didn’t have this problem during the entire beta. Anyone in particulate you suspect?